Lists top-level containers (not nested within other containers)
AI agents call list_containers to retrieve information from RSpace MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a retrieval operation to enumerate containers, returning data without creating, modifying, deleting, or executing anything. It is a safe read-only query with minimal blast radius if misused by an AI agent.
From the tool's definition Tool name 'list_containers' and description 'Lists top-level containers (not nested within other containers)' indicate a query operation that retrieves information without modification or side effects.
Attacks that exploit this kind of access
Lists top-level containers (not nested within other containers). It is categorised as a Read tool in the RSpace MCP Server MCP Server, which means it retrieves data without modifying state.
Register the RSpace MCP Server MCP server in PolicyLayer and add a rule for list_containers: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches RSpace MCP Server. Nothing to install.
list_containers is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_containers rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for list_containers. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
list_containers is provided by the RSpace MCP Server MCP server (rspace-os/rspace-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →